gfx: Add FrameTime and DisplayTime classes

cc/trees/layer_tree_host.h

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <limits>
 #include <list>
 #include <string>
@@ skipping 127 matching lines @@
   static bool AnyLayerTreeHostInstanceExists();
 
   void set_needs_filter_context() { needs_filter_context_ = true; }
   bool needs_offscreen_context() const {
     return needs_filter_context_;
   }
 
   // LayerTreeHost interface to Proxy.
   void WillBeginMainFrame() { client_->WillBeginMainFrame(); }
   void DidBeginMainFrame();
-  void UpdateClientAnimations(base::TimeTicks monotonic_frame_begin_time);
-  void AnimateLayers(base::TimeTicks monotonic_frame_begin_time);
+  void UpdateClientAnimations(gfx::FrameTime monotonic_frame_begin_time);
+  void AnimateLayers(gfx::FrameTime monotonic_frame_begin_time);
   void DidStopFlinging();
   void Layout();
   void BeginCommitOnImplThread(LayerTreeHostImpl* host_impl);
   void FinishCommitOnImplThread(LayerTreeHostImpl* host_impl);
   void WillCommit();
   void CommitComplete();
   scoped_ptr<OutputSurface> CreateOutputSurface();
   virtual scoped_ptr<LayerTreeHostImpl> CreateLayerTreeHostImpl(
       LayerTreeHostImplClient* client);
   void DidLoseOutputSurface();
@@ skipping 12 matching lines @@
   bool InitializeOutputSurfaceIfNeeded();
   bool UpdateLayers(ResourceUpdateQueue* queue);
 
   LayerTreeHostClient* client() { return client_; }
   const base::WeakPtr<InputHandler>& GetInputHandler() {
     return input_handler_weak_ptr_;
   }
 
   void NotifyInputThrottledUntilCommit();
 
-  void Composite(base::TimeTicks frame_begin_time);
+  void Composite(gfx::FrameTime frame_begin_time);
 
   // Only used when compositing on the main thread.
   void ScheduleComposite();
 
   // Composites and attempts to read back the result into the provided
   // buffer. If it wasn't possible, e.g. due to context lost, will return
   // false.
   bool CompositeAndReadback(void* pixels, gfx::Rect rect_in_device_viewport);
 
   void FinishAllRendering();
@@ skipping 279 matching lines @@
   scoped_refptr<Layer> outer_viewport_scroll_layer_;
 
   SharedBitmapManager* shared_bitmap_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_